Neural network-based method and system for predicting shapes of three-dimensional hearths of aluminum cells in real time

Abstract

The invention discloses a neural network-based method and system for predicting the shapes of three-dimensional hearths an aluminum cells in real time. The method comprises the following steps of: 1) obtaining aluminum cell modeling parameters; 2) constructing an aluminum cell heat transfer finite element model according to the aluminum cell modeling parameters, carrying out permutation and combination on different experimental parameters to form experimental groups, and respectively inputting each group of experimental parameters in the experimental groups into the aluminum cell heat transfer finite element model to carry out simulation calculation, so as to obtain a hearth shape and a cell shell temperature corresponding to each group experimental parameters; 3) constructing a BP neural network by taking the cell shell temperature, an electrolyte level and an aluminum level as input variables and taking the hearth shape as an output variable; 4) training the BP neural network on the basis of a simulation result in the step 2); and 5) measuring and obtaining the cell shell temperature, the electrolyte level and the aluminum level in real time, and inputting the cell shell temperature, the electrolyte level and the aluminum level into the BP neural network trained in the step 4), so as to obtain a finally predicted hearth shape. According to the method and system disclosed by the invention, the shapes of the three-dimensional hearths of the aluminum cells can be correctly and rapidly predicted.

Description

technical field [0001] The invention belongs to the field of aluminum electrolytic cells, in particular to a neural network-based real-time prediction method and system for a three-dimensional furnace shape of an aluminum electrolytic cell. Background technique [0002] In the aluminum electrolytic cell, the current passes through the molten electrolyte with a certain resistance to generate Joule heat to maintain the high temperature operation of the electrolytic cell. The molten electrolyte cools and solidifies when it contacts the side wall, forming a ring of furnace sides and outstretched legs, which can protect the side wall from being eroded by the high-temperature melt. Maintaining a suitable furnace shape can reduce the horizontal current in the molten aluminum, improve the stability of the magnetic fluid in the tank, and facilitate the stable operation of the production process. Unreasonable hearth shape will lead to deterioration of stability in the tank, lower cur...

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Problems solved by technology

This patent application can continuously monitor the temperature of the electrolytic cell, but neither discloses the specific method for calculating and analyzing the shape of the side of the aluminum electrolytic cell, nor does it verify the calculation results. It is impossible to determine whether the shape of the furnace in the cell is regular and whether there is a risk of leakage

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